8th Grade
Math 1
Math 1
Mrs. Shine worked from half past four in the morning to 9:00 am. How many hours did she work?
4 hours 30 minutes
What do you call a shape that is 2x the original size?
dilation
What's the y - intercept in y=3x-1
-1
What is the value of the expression 3x2-1 when x=-1
2
All triangles should add up to what degree?
180 degrees
y = 2x - 2
What is the y - intercept
-2
1 3/5 + 2 2/3 =
4 4/5
Solve: -2(x-2) = 3x-6
x=2
Reduce 15/25
3/5
Solve for x:
3x - 4 = 2
X = 2
Evaluate:
72 - 3(4-3) +10.3
76
Solve for y:
2(y-2) = 3x +2
y = 3x/2 +3
1/2 of 16=
8
Distribute and simplify:
1-x(2-3)
1-2x+3x
1+x
Solve for x:
3x- (x-2 ) = 6x - 2
x=1
What is 210 divided by 5?
42
Find the difference: 4,589-2,588
2,001
What is the square root of 81?
9
Do the following lengths make sides of a triangle? If yes, what kind?
a = 2, b = 6, c = 10
No
What is 81 x 54?
4,374
Round 85.5 to the nearest whole number
90
What is the 8,529 divided by 3?
2,843
Use <,>,or = to compare:
1/2 ___ 8/16
=
Do the following lengths make sides of a triangle? If yes, what kind?
a = 6, b = 8, c = 11
Yes, obtuse.
Convert into y=mx+b form.
2x + y -10 = 9x - 7
y= 7x +3
Is (3,-4) a solution to the equation 3x - 4y = 25. Show work.
Yes
Is (1, -2) a solution to the system of equations:
y = -5x + 3
y = x - 3
Show work.
Yes.
Find the x and y intercepts of the line 2x - 4y =12
x int: (6,0)
y int: (0,-3)
Emma bought markers (x) and crayons (y). Markers cost $3 each and crayons cost $1. She bought 8 items and spent $14. How many markers (x) and crayons (y) did she buy?
crayons (y) = 5
Nora bought toys (x) for $3 each and games (y) for $5 each. She bought 8 items and spent $30. How many toys (x) and games (y) did she buy?
Toys (x) = 5
Games (y)= 3